Heel-nailing machine



UNITED STATES PATENT OFFICE.

FREEBORN F. BAYMOND, 2D, OF NEWTON, MASSACHUSETTS.

HEEL-NAILING- MACHINE.

SPECIFICATION forming part of Letters Patent No. 348,689, dated September 7, 1886.

Application filed February 17, 18

To (0% whom it 71mg concern.-

Be it known that I, FREEBORN F. RAY- MOND, 2d, of Newton, in the county of Mid dlesex and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvementin Heel-Nailing Machines, of which thefollowing is a full, clear, and we act description, reference being had to the accompanying drawings, forming a part of this specification, in explaining its nature.

This invention relates, especially, to thelast 01' work-support for the heel and it co'nsistsin providing the upper surface thereof with the rounded recesses or clinching-dies raised above the plane surface of the last or work-support, within which the points of the attaching-nails are turned and clinched. This construction of the heel-support or last is very desirable, especially if anail with a comparativelysharp point is used.

Referring to the drawings, Figure 1 shows a portion of a heel-support or last having my improvement, a section of an attached heel, a portion of a templet or pressure-plate, a nailcarrier plate, and a gang or group of drivers above the same. It represents the parts of a National IIeelNailing Machine after the nails have been driven, but before the pressure-plate has been released, and it shows the ends of the nails turned over and clinched by the clinching-dies. Fig. 2 represents a heelnail having atapering surface on two sides and a sharp pointin one view, and in the other view the point of the nail as turned by a clinchingdie. Figs. 3 and 4 show sections of a heelsupport or last having myimproved clinching dies or recesses, and Fi 5 is a plan view thereof.

A is the driverholder block of the heel-attaching machine; a, the drivers; B, the pressure or templet plate; C, the nail holder and carrier; D, the heel-support or last; E, the heelblank; 6, the heel-attaching nails.

The last or heel-support, preferably, is a solid block of iron or other material, although it may be a last with an ordinary iron bottom secured thereto. In its upper surface, at the heel end, I have formed the cavities d, which are so placed in relation to the edge of the heelsupport or last and to each other and to the nail-driving devices as to receive the ends or points of the heel-attaching nails as they are simultaneously driven, and to turn the ends thereof backward and upward, so as to cause them to re'enter the insole and form what is known as a clinch, substantially as shown in Fig. 1.

It will be observed that the lower surfaces of the clinching dies or reccsses are slightly above the surface of the supporter last, as represented in Fig. 4, or substantially on a line therewith, as represented in Fig. 3. This form of clinching die or recess serves to clinch the nails in the insole in such a manner as to prevent the nails after they are clinched from eX- tending beyond the upper surface of the insole, the raised edge d about each die or recess sinking or entering under the pressure into the insole, while the remainder of the surface of the support receives the sole, and consequently it is desirable that these edges (1 shall not be so bread as to prevent the insole from being forced down upon the upper surface of the heel-support; and in Figs. 3 and 4; I have illustrated a portion of an insole in place upon the support to show the when thus formed. It will be observed that these clinching-dies bear such relation to each other, and to the edge of the heel-support,and to the holes, in the templet or pressure-plates and the drivers that the points of the nails must, when driven, strike the surface of the clinching-dies and be turned thereby.

In operation the heel blank is placed upon the boot or shoe, which has been adjusted upon the heel-support or last beneath the tcrnplet or pressure-plate, the clinching-dies being substantially in line with the holes in the templet. If the holes are to beprickcd the awls are then reciprocated. The nails are then fed to the templet and driven simultaneously by the drivers, and their points caused to come in contact with the turning-surface of the c1iuching-dies and turned back into the insole, so that the points re-enter the insole. T he clinched ends of the nails are embedded in the insole, so that they shall not project above the upper sun face thereof; If, in lieu of feeding the attachingnails to the templet,a loaded hcel-blankis used, the result of the operation of the maehiueis of course the same, and I wish it to be understood that the inveution can be as well used with a machine driving a loaded heel-blank as position of the clinching dies or recesses with any other. Of course when the clinching-dies are made separate or distinct from each other as many are used as there are nails to be driven.

It will be seen that a heel secured to the insole by nails which are not headed upon the heel-support, or simply bent or turned over at right angles to their length by contact with the heel-support, as in the ordinary heel-atro taching machine, but which are turned back upon themselves, so that the points of the nails re-enter the insole and are driven back therein, must be very firmly and solidly secured in place. The nails being thus fastened in place by their points cannotas easily work back or upward as though they were simply turned over or Slightly headed. To accomplish this result,it is'desirable to use a form of nail differing somewhat from the ordinary heel-nail in that its point is made sharp, the driving end of an ordinary heel-nail being blunt orunpointed, and I prefer the form of nail shown in Fig. 2, which has a bevel upon two sides, forming a rather long and quite sharp point, sometimes known as a chisel-point.

I am aware of the Patent No. 312,558, to

Edward E. Dntton for alast, which shows and claims a last having a metallic rim projecting above the face thereof, in which there is arranged rounded indentations immediately adjacent to each other in its surface; but as this rim is raised at the heel end of the last above the bottom of the last, and as the rounded indentations in said rim are immediately adjacent to each other and do not bear any 3 5 distinct prearranged relation to individual templet-holes and nail-driving devices, I consider that it does not contain the essential fea tures of my invention, and I do not claim what is therein shown and described.

Having thus fully described my invention,

- I claim and desire to secure by Letters Patent of the United States- In a heel-attaching machine, the last or heel-support having a plane-surface and the projections or rims d, raised above said surface to form clinching-dies, substantially as set: forth.

FRREEBORN F. RAYMOND, 2D.

\Vitnesses:

J. M. DoLAN, FRED B. DOLAN. 

